PA-BN : "FX015: Sign lost." dump

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Hi there,

I'm working in HR Benefits and have come across an interesting problem. If I hire an employee with a salary of 1.0000 (USD4) and try to take 1 to 5 times their salary as the life insurance benefit, I get the following ABAP dump :

Screen name: MP016800

Screen number: 2040

Screen field: Q0168-EECST

Error: FX015: Sign lost.

I've check SAP notes and find nothing relating to this error in benefits.